Re: OVMF/Xen, Debian wheezy can't boot with NX on stack (Was: Re: [edk2] [PATCH] OvmfPkg: prevent code execution from DXE stack)

[Ian Campbell <ian.campbell@citrix.com>]

On Mon, 2015-09-14 at 13:07 +0200, Laszlo Ersek wrote:
> Debian Wheezy is not very old, it's only a year older than RHEL7 (May
> > 2013
> > vs June 2014) and only a bit older than two years in absolute terms. It is
> > also the subject of an LTS effort, which extends its lifetime to 2018.
> 
> (*)
> 
> > For comparison Windows 7 (which you argue regressing would be serious) was
> > released in 2009 and there have been two major Windows releases since then.
> 
> (**)
> 
> > Given that and with consideration between the desire to run older platforms
> > vs. a development environment it seems to me that Debian Wheezy has not yet
> > reached the threshold for being ignored or for saying to users "you must
> > now upgrade".
> 
> I believe I could argue against both (*) and (**), but it would not be
> productive. :)

Yes, I'm sure we could be here until the cows come home to roost ;-)

> Instead, what matters is the (now) clear, significant user demand for
> turning off PcdSetNxForStack by default. I'll send a followup patch for
> my series to that end.

Thanks.

> And, sorry about the inconvenience the regression may have caused, of
> course ;)

No need to apologise, it was an experiment worth performing IMHO.

Ian.